Programming BCM

CAUTION: When BCM is replaced, new BCM will automatically program to resistance of the ignition key or interrogator setting that is used the first time ignition switch is turned to RUN position. This process can only be performed one time.

NOTE: If Body Control Module (BCM) harness connector C2 is disconnected first, then reconnected last, no BCM DTCs will set.

NOTE: If replacing Body Control Module (BCM) with NEW BCM, BCM will be programmed by manufacturer in a factory test mode. This mode allows only limited functionality. To exit factory test mode, cycle ignition switch between RUN and OFF positions 10 times.

After a new BCM has been installed, use one of the customer's keys to turn ignition switch to RUN position. Start engine to verify system operation. If SECURITY warning indicator comes on for about 5 seconds and then goes out, BCM is programmed properly. If SECURITY warning indicator flashes (about one flash per second) until ignition switch is turned to OFF position, BCM did not program. Check for faulty system components and wiring.